True Flex Fuel Tune

[junits15]

This does look like the solution for FI flex tunes.

I hope they bring this to the low cost software, I’d never look back.

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[engineermike]

FYI, pcmtech confirmed what I hypothesized in post 146 regarding how the fuel line volume plays into flex tuning and how these values being zerod in the mustang affects it negatively. Junit15 was damn close in his original observations and theory.

 

[K4fxd]

In the gen 2 the fuel used to enable learning is populated.

On the PCM forum he answered this for the gen3.

Mike have you tried setting these as the F150? did it help learning.

The Brazil switch turns off learning.

 

[engineermike]

I haven’t done it yet and even when I do it will take a few days to test.

 

[junits15]

In the gen 2 the fuel used to enable learning is populated.

On the PCM forum he answered this for the gen3.

Mike have you tried setting these as the F150? did it help learning.

The Brazil switch turns off learning.

Brazil switch locks it to e100 I assume?

 

[K4fxd]

Brazil switch locks it to e100 I assume?

He said it turns off locking.

This a copy and paste from Roland on the PCMtec forum

Brazil mode effectively forces the AFR to remain "unstable" at all times. Eg it disables "Adaptive fuel control" and will disable the AFR from ever reach ing mature status. Eg it will never lock. I believe due to high humidity and water contamination this is the reason they use this (E100 loves to soak up water). I would not recommend using this feature on anything but a stock car that sits around with randomly changing fuel quality (despite not refilling the tank).

 

[engineermike]

I think we could force a Brazil mode by max’ing out the flow range, switches, and time to infer. It would certainly prevent maturing too early but also I think we want it to mature to allow other diagnostics.

 

[Ausdwc]

I uninstalled and downloaded it again today, the lost ethanol parameters are back. Still can't turn off FAOSC with a switch.

The newly downloaded version is x86 and works with my dongle.

What K4fxd was experiencing with the missing parameters in PCMTec is that version 2.10 was not intended for the ProTuner US market and hence, when running it, it saw some parameters that are available outside the US. 2.10.

2.10 is an older version of the software that does not have as many parameters as version 3 has.

FAOSC as stated helps with catalyst protection as well as some other areas. Another example of catalyst protection is running lambda 0.67 on power, anything higher and you will burn up the high cell cats.

For all other regions these parameters are available.

I also saw on another thread you have to license a file before you can make changes. You can get around this by reading out the vehicle calibration and then doing a "Populate Unlicensed File" which will give you access to all the parameters and allow you to "tune" the vehicle but you will have license it to flash it into a vehicle.

You can also create a stock file from the catch code or strategy and tune it without licensing the file. The tec file can be freely shared for helping others tuner their vehicle.

Note you will only need a cable if you are going to tune a/your vehicle.

 

[Ausdwc]

He said it turns off locking.

This a copy and paste from Roland on the PCMtec forum

Brazil mode effectively forces the AFR to remain "unstable" at all times. Eg it disables "Adaptive fuel control" and will disable the AFR from ever reach ing mature status. Eg it will never lock. I believe due to high humidity and water contamination this is the reason they use this (E100 loves to soak up water). I would not recommend using this feature on anything but a stock car that sits around with randomly changing fuel quality (despite not refilling the tank).

You will need to read what functions you are enabling with the "Brazil mode options". It is not just this as Brazil OBDII regulations allow misfire monitoring to be disabled when certain criteria are true, also some vehicles sold outside the US have HEGO's instead of the upstream O2 sensor.

It has been reported that some service stations will add water to the their ethanol fuels in order to increase profit!

 

[engineermike]

As I explore, I'm finding other parameters in PCMTech that aren't defined in HPTuners. For instance, the time constant for learning stoichiometric lambda is .1 in the stock F150 flex and .25 in the mustang tunes. I believe this makes for faster learning in the F150, and it's a change most won't know to make to the Mustang because the parameter didn't exist there in HPT.

 

[K4fxd]

I've been looking at different tune OSID's and comparing. I have found 3 different OP cam timings for the gen 2.

 

[Grimreaper]

Post them or what's the strategy is? Have never seen different from Ford before

 

[K4fxd]

FSGS05A
KTDS4NF'

The third was a gaff on my part. It was a gen 3 file.

 

[Rolls]

Comparing the various stock OSIDs is VERY interesting and can be done quickly via the following:
Open the calibration list:

Select filter editor

Filter the list for the vehicles you are interested in.

Or select the filter rule button

Right click "set as compare strategy"

Right click on another file and select "Compare with xxxx"

Then voila you can see what Ford changed from the factory in these two files. Eg this is the exhaust cam timing for a 5.2 supercharged vs a 5.0 GT. As you can see its quite different.

More info here:
HOWTO: Find compatible strategies and how to change strategy successfully. - Falcon HOWTO Guides - PCMTEC Forums

 

[Rolls]

50% intro sale ends today. If you are still on the fence now is the time to buy!

https://www.pcmtec.com/pcmtec-editor-protuner-edition-usvp1

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